Membrane for a pressure dome
AssigneeFresenius Medical Care Deutschland GmbH
InventorsMassimo Fini, Reinhold Reiter, Luca Donarini
Life of this patent
Estimating the term…
Abstract
A membrane for a pressure dome is configured to cooperate with a pressure sensor, and includes a resilient circular wall and a circular rim. The resilient circular wall is configured to close one side of the pressure dome so as to define a partition between the inside of the pressure dome and the outside. The circular rim is configured to be housed in a main body of the pressure dome. The membrane is configured such that the resilient circular wall, when there is no difference between the pressures acting respectively on the inner surface and on the outer surface, has an outwardly convex form.
Claims21
A membrane for a pressure dome, said membrane comprising:
- a resilient element that partitions the pressure dome into a first side and a second side;
- and
- an edge that circumferentially surrounds the resilient element and is secured in a body of the pressure dome,
- the resilient element having a convex form when there is substantially no difference between a pressure on a first surface thereof and a pressure on a second surface thereof.
A pressure dome for co-operating with a pressure sensor, said pressure dome comprising:
- a body having an inlet and an outlet that provide for fluid communication with a conduit;
- and
- a membrane that includes a resilient element partitioning the pressure dome into a first side and a second side and (ii) an edge that circumferentially surrounds the resilient element and is secured in the body of the pressure dome,
- the resilient element having a convex form when there is substantially no difference between a pressure on a first surface thereof and a pressure on a second surface thereof.
A system for the therapeutic treatment of a physiological fluid, said system comprising:
- a circuit through which the physiological fluid being treated is conveyed;
- and
- a machine that effects the therapeutic treatment of the physiological fluid conveyed through the circuit,
- the machine including a sensor that detects a pressure of the physiological fluid, and
- the circuit including a pressure dome that provides an interface between the sensor and the circuit,
- the pressure dome including a body having an inlet and an outlet that provide for fluid communication with the circuit, and
- a membrane that includes (i) a resilient element partitioning the pressure dome into a first side and a second side and (ii) an edge that circumferentially surrounds the resilient element and is secured in the body of the pressure dome,
- the resilient element having a convex form when there is substantially no difference between a pressure on a first surface thereof and a pressure on a second surface thereof.
Dependencies are inferred from the claim text.